HetaOni is an anime adaptation of Ao Oni using Hetalia Axis of Powers as characters. Enjoy my walkthroug as i crap my self :)
The story begins with Italy who heard interesting rumors about a haunted house. He later tells America about it because he was sure America would tell it to everyone. The story seemed to have intrigued the other nations and they all decided to go to the mansion/house. Inside the mansion, they later on find out there was a dangerous monster inside that resembled America's alien friend, Tony. On top of that, they were all locked in the mansion. From then on, their only goals were to stay alive and find a way out.